Car-window lock.



No. 748,064. PATENTED DEC. 29, 1903.

0. GRAHAM.

GAR WINDOW'LOGK.

APPLICATION FILED MAY 25, 1903.

no MODEL.

WITNESSES: I ZNVE/VTOR:

THE Nuams PETERS c0 vumoumo. wAsnmcTou, 0. c,

Patented hecemter e9, 1903.-

P TENT OFFICE.

OARGILL GRAHAM, OF TARKIO, MISSOURI.

CAR-WINDOW LOCK.

SPECIFICATION forming part of Letters Patent No. 748,064, dated December 29, 1903. Application filed May 25, 1903. Serial No. 158,597. (No model.)

To whom it may concern:

Be it known that I, CARGILL GRAHAM, residing at Tarkio, in the county of Atchison and State of Missouri, have invented certain useful Improvements in Oar-Window Locks; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form apart of this specification.

This invention relates to a new and novel improvement in window locks and latches especially adapted to be used in connection with street or railway cars.

The aim of my invention is to provide a neat and inexpensive lock and latch so arranged that the window may be locked when closed and be latched at any suitable point when raised, as will be described more fully hereinafter and finally pointed out in the claim.

In the accompanying drawingslhaveshown in Figure 1 a front view of a window, disclosing a broken portion of asash and frame provided with my lock and latch. Fig. 2 shows a front view of a lock and latch embodying myinvention, while Fig. 3 shows an edge view of my lock and latch.

In carrying out the aim of my invention I constructed a housing approximately wedgeshaped in cross-section, as shown in Fig. 1. This housing comprises the bottom plate 3, the edge 1 provided with a perforation through which extends the bolt 5, and the opening X. This housing is closed by means of the slotted top plate 13, the top plate being secured to the housing proper by means of the screws 2 2. Slidably held within the housing is the bolt 5, which above is provided with the seating 6, and from this bolt extends an operating-pin 4, which projects through a sloty within the upper plate 13, as shown in Figs. 2 and 3. It will be noticed that the housing is provided with a straight perforated edge, a top, and a bottom and that the remaining edge, as shown at 1 in 'Fig. 1, extends at an angle to the perforated edge and that the smaller end of the housing extends upward.

The top plate 13 is slotted, as is shown ate in Fig. 2, this slot running parallel to the edge, set at angle, as shown in Fig. 2, and extending through slot 2 is the pin 12, which pin is secured loosely to a suitable roller 10,,which freely revolves upon the pin 12, which in turn is permitted to slide up and down within the slot 2. The roller 10 is of such a size that the same rotates and rests against the side 1 of the housing, while a portion of the roller will project through the slot as, as shown in Figs.

'1 and 2.

Held between two pins 7 within the housing is an approximately V-shaped spring, one member, 8, of which rests within the seating 6, while the remaining member, 9, is adapted to normally force the roller 10 upward, the lower member 8 normally forcing the bolt outward. The window-casing B at a suit able point is providedwith arecess into which the bolt works, while the roller 10 is adapted to work against the windowcasing. The housing is secured to the window-sash A by means of the screws 2. Now when it is desired to raise the window-sash A the operator would grasp the operating-pin 4 to carry the bolt 5 out of the seating. The window could then be raised, as the roller 10 would be carried downward in rotating against the window-frame, the opening within the roller 10 being slightly larger than the pin 12. However, as soon as the window-sash A were stopped the spring 9, which normally forces the roller 10 upward, would cause the roller 10 to bind between the window-frame B and the angular edge 1 of the housing to lock and hold the window-sash. By this arrangement the window-sash can be locked at any suitable point and cannot be shaken or rattled loose to close. To lower the window, it is simply necessary for the operator to carry the pin 12 downward against the tension of the spring 9 to release the same, when the window may be readily closed. It will be noticed that the spring performs a double. function in that it normally forces the bolt 5 outward and the roller 10 upward.

This lock and latch is noticeable because of its extreme simplicity, and the lock and latch may be madeof any suitable size and material and, if desired, be used upon both sides of the window-sash.

Having thus described my said invention, what I claim as new, and desire to secure by United States Letters Patent, is-

A window lock and latch, comprising a housing approximately wedge-shaped, said housing upon one edge being slotted and perforated, the smallest end of said housing extending upward, a roller loosely held within said housing and adapted to work against one edge of the same and project through aforesaid slot, an operating-pin secured to said roller, a bolt extending through aforesaid perforation, an operating-pin secured to said 

